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2003 Course Computer Networks

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Total No. of Questions : 12] P1479 [Total No. of Pages :3 [3764] - 241 B.E. (Electronics) COMPUTER NETWORKS (2003 Course) Time : 3 Hours] [Max. Marks:100 Instructions to the candidates: 1) Answers to the two sections should be written in separate books. 2) Neat diagrams must be drawn wherever necessary. 3) Figures to the right indicate full marks. 4) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 5) Assume suitable data, if necessary. SECTION - I Q1) a) Suggest various network topologies for : i) Broadcast networks ii) Point to Point network List their advantages and disadvantages. [8] b) What is the principal difference between connectionless communication and connection oriented communication. [4] c) What are headers and trailers and how do they get added and removed? [4] OR Q2) a) Explain the service primitives used in connected oriented services. [6] b) List similarities and differences between OSI and TCP/IP reference model. [6] c) Which OSI layer is responsible for the following? i) Determining the best path to route packets. ii) Providing end-to-end communication with reliable service. iii) Determining the size of packets. iv) Carrying the packets. [4] P.T.O.

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